Marked a SMALL based on bust and shoulder, but the length is rather longer than a typical small.  See measurements.

Satin-like cotton blend with a light sheen and medium heavy.  Very fine and delicate, and a great vintage piece.  Slight fraying on inside facing near button holes and some pilling on back side, as pictured. 

Soft fabric, embroidered detail on bust pocket. Slits on either side of bottom of dress. 

21" Pit to pit

22" Sleeve

23" Waist

47" Length